I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
seniles snails sinless sonless sunless snowless sinewless snells snools zonules cineoles zoneless
seniles nils manilas finales gainless venules innless hyphenless finless biennials veinless runless boonless penniless hymnless pinoles menials reinless manilles sinless sonless zonules downless tenails townless unnails chenilles nounless kinless finials painless anils gunless henleys canailles nills noils aneles veinules lunules anoles nails pinnules rainless moonless renails manless awnless biennales snails sunless denials tenailles toenails unless winless chinless